listen to aeronautical traffic between Seychelles
and Nairobi, observed on 8879 kHz back in 1986 (rb)
here is a recording of the
AFTN traffic of 5YD (rb, 1988) %20(rainer%20brannolte%2C%20d)%20(mc-919-1).jpg){kind=small}
just in case you have no decoder
at hand ;-)
in 1981, Hans Friedrich Dumrese received this QSL-letter for
a radioteletype circuit
this letter verifies both a radioteletype and an air/ground circuit
(rb, 1984)
here a form letter, accompanied by PPC, from the collection of
Peter Conway (1987)
------------------------------------------------------------
Callsigns:
5YD **
Frequencies Voice:
3467
4611
5517
5634
5658
6559
8879
8888
11300
13306
Frequencies Morse Telegraphy:
5740
6859.5
7777
12247
16245
Frequencies Radioteletype:
3160
3182
4044
4060
4497
4504.1
5050
5758.6
5878.5
6920
7423
7445
7550
7853
7906.6
8145
8165
8186
9320
9375
9423.6
9478
10139
10948.6
11546
11622.7
12067.7
12171.9
12256
12373.4
13365.1
13366.4
13366.5
13372.8
13373.4
13737
13750
13781
13909.2
13945.2
14737
14775.9
14845.5
15708.1
16276.6
17508
17588
18492.8
21875
Systems used:
50 Bd